Here's what's happening: one is getting married, one is further testing the solo waters (pulling a Timberlake, anyone?), and one may be in a position to entice a new girlfriend, to best his werewolf-romancing ex.

Let's do oldest to youngest, shall we?

Kevin Jonas is getting married (I know, right?). The 22-year-old guitar player has been gearing up to marry hairdresser Danielle Deleasa for months. After their engagement announcement, G-rated pangs of course realigned to the remaining brothers.

Reports say the nuptials will take place Saturday on Long Island at the scenic Oheka Castle (the site of 'N Sync member Joey Fatone's wedding, and a fictional retreat for Cameron Diaz and Ashton Kutcher in "What Happens in Vegas").

Middle brother Joe Jonas will be there, naturally. And you know, they do say a wedding is a great place to meet new people -- which is what he might want to be doing, considering the active dating life of his ex, Taylor Swift, and her new love interest, Taylor Lautner.

Baby brother Nick can provide some support for ol' Joe, as he's been making major strides in independence lately. Earlier this week it was announced that Nick and his non-JoBros group, Nick Jonas and the Administration, will serve as house band for the Critics Choice Awards on Jan. 15.

Nick said that he's got about 25 songs to learn, including the show's intro and exit tunes.